Air water collection-photocatalytic hydrogen production bifunctional composite material and preparation method thereof
A composite material and photocatalytic technology, which is applied in the field of air water collection-photocatalytic hydrogen production bifunctional composite material and its preparation field, can solve the problems of large demand for liquid water raw materials, complex environment and management problems, etc., so as to improve the photocatalytic production. The effect of hydrogen activity, system simplification, and stability improvement
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[0033] Specifically, a method for preparing an air water collection-photocatalytic hydrogen production dual-functional composite material, the steps are as follows:
[0034] Step 1: Synthesis of MOF (with UiO-66-NH 2 For example): Weigh 0.268g ZrCl 4 ·6H 2 O was dissolved in 20 mL of DMF, and the resulting solution was sonicated for 20 min (1000 W, 50 Hz); subsequently, 2 mL of concentrated hydrochloric acid (mass concentration was 36%), 0.25 g of 2-aminoterephthalic acid (H 2 APTA) and 10 mL DMF were added to the solution after ultrasonic treatment, and then ultrasonic treatment was performed for 20 min. Then the mixture was transferred to a PTFE-lined 100mL stainless steel reactor, reacted at 80°C and kept warm for 24h; after taking it out and cooling to room temperature naturally, the yellow precipitate was collected by centrifugation and washed with DMF and anhydrous methanol respectively 3 times, and finally the centrifuged yellow sample was dried overnight in an oven ...
Embodiment 1
[0040] Step 1: Weigh 0.268g ZrCl 4 ·6H 2 O was dissolved in 20 mL of DMF, and the resulting solution was sonicated for 20 min (1000 W, 50 Hz); subsequently, 2 mL of concentrated hydrochloric acid, 0.25 g of 2-aminoterephthalic acid (H 2 APTA) and 10 mL DMF were added to the solution after ultrasonic treatment, and then ultrasonic treatment was performed for 20 min. Then the mixture was transferred to a PTFE-lined 100mL stainless steel reactor, reacted at 80°C and kept warm for 24h; after taking it out and cooling to room temperature naturally, the yellow precipitate was collected by centrifugation and washed with DMF and anhydrous methanol respectively 3 times, and finally the centrifuged yellow sample was dried overnight in an oven at 85°C to obtain UiO-66-NH 2 .
[0041] Step 2: Weigh 160mmol NaOH and 1mmol Co(NO 3 ) 2 ·6H 2 Add 20 mL of deionized water to each O to fully dissolve, then add the cobalt nitrate hexahydrate aqueous solution dropwise into the sodium hydrox...
Embodiment 2
[0044] Embodiment 2-embodiment 8 is the preparation method that changes composite material calcining temperature;
[0045] Select the calcination temperature range from 80°C to 300°C, for example, set the calcination temperature to 100°C, 140°C, 160°C, 180°C, 200°C, 220°C, 240°C, etc.
[0046] The calcination temperature of this example is 160°C.
[0047] Step 1: Weigh 0.268g ZrCl 4 ·6H 2 O was dissolved in 20 mL of DMF, and the resulting solution was sonicated for 20 min (1000 W, 50 Hz); subsequently, 2 mL of concentrated hydrochloric acid, 0.25 g of 2-aminoterephthalic acid (H 2 APTA) and 10 mL DMF were added to the solution after ultrasonic treatment, and then ultrasonic treatment was performed for 20 min. Then the mixture was transferred to a PTFE-lined 100mL stainless steel reactor, reacted at 80°C and kept warm for 24h; after taking it out and cooling to room temperature naturally, the yellow precipitate was collected by centrifugation and washed with DMF and anhydrou...
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